The panic happened while doing buildworld. I am not entirely sure that the panic is not caused by a hardware error since prior to the panic two CRC errors showed up in /var/log/messages. On the other hand, it seems they might not be caused by a hardware error since prior to the panic I had seen CRC errors a couple of times and reinstalling the system got rid of them. In more detail, the machine has gone the following cycle of couple of times:

1 - system has a panic (related to the kernel module I'm developing)
2 - hammer checkmap starts reporting errors occasionally
3 - then CRC errors show up /var/log/messages
4 - re-install the system and all errors vanish
5 - go back to 1

However, the last time after step 3 "make buildworld" led to this panic.

History

On Wed, Dec 21, 2016 at 7:46 PM,
<bugtracker-admin@leaf.dragonflybsd.org> wrote:
> Issue #2971 has been reported by peeter.
>
> ----------------------------------------
> Bug #2971: kernel 4.7: buildworld causes panic: Bad link elm 0xffffffe1c766d500 prev->next != elm
> http://bugs.dragonflybsd.org/issues/2971>
> * Author: peeter
> * Status: New
> * Priority: Normal
> * Assignee:
> * Category:
> * Target version:
> ----------------------------------------
> The panic happened while doing buildworld. I am not entirely sure that the panic is not caused by a hardware error since prior to the panic two CRC errors showed up in /var/log/messages. On the other hand, it seems they might not be caused by a hardware error since prior to the panic I had seen CRC errors a couple of times and reinstalling the system got rid of them. In more detail, the machine has gone the following cycle of couple of times:
>
> 1 - system has a panic (related to the kernel module I'm developing)
> 2 - hammer checkmap starts reporting errors occasionally
> 3 - then CRC errors show up /var/log/messages
> 4 - re-install the system and all errors vanish
> 5 - go back to 1
>
> However, the last time after step 3 "make buildworld" led to this panic.
>
>
> ---Files--------------------------------
> hammer-crc-error-crash.txt (9.48 KB)
>
>
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